Polls show Democrats are likely to win control of the House, with Republicans likely to retain their majority in the Senate.
Here is what to expect, based on interviews with more than a half a dozen congressional aides:
* The majority party in the House or Senate receives more money and staff for investigations than the minority party. Control of key House panels, such as the committee on oversight and government reform, the judiciary committee, the tax-writing ways and means committee and the permanent select committee on intelligence, is expected to shift to top Democrats.
* Democratic House leaders and prospective committee chairs already have been discussing the scope and sequencing of investigations they will launch if they win control.